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What is the mole fraction of He in a gaseous solution prepared from 4.0 g of He, 6.5 g of Ar, and 10.0 g of Ne?
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What is the molality of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water?
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What is being meant if a solution contains 15 ppm of benzene? The density of the solution is 1.00 g/mL.
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Determine the mole fraction of phosphoric acid (H3PO4) in a 25.4% (by mass) aqueous solution.
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Determine the vapor pressure of a solution made by dissolving 109 grams of glucose (molar mass = 180.2 g/mol) in 920.0 ml of water at 25 degrees celsius. The vapor pressure of pure water at 25 degrees celsius is 23.76 mm Hg. Assume the density of the solution is 1.00 g/ml. 22.98 mm Hg 0.605 mm Hg 23.48 mm Hg 23.76 mm Hg |
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